ios/chrome/browser/dom_distiller/distiller_viewer.h

   1 // Copyright 2015 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef IOS_CHROME_BROWSER_DOM_DISTILLER_DISTILLER_VIEWER_H_
   6 #define IOS_CHROME_BROWSER_DOM_DISTILLER_DISTILLER_VIEWER_H_
   7
   8 #include "base/memory/scoped_ptr.h"
   9 #include "components/dom_distiller/core/task_tracker.h"
  10
  11 class GURL;
  12
  13 namespace ios {
  14 class ChromeBrowserState;
  15 }
  16
  17 namespace dom_distiller {
  18
  19 class DistilledPagePrefs;
  20
  21 // A very simple and naive implementation of the dom_distiller
  22 // ViewRequestDelegate: From an URL it builds an HTML string and notifies when
  23 // finished.
  24 class DistillerViewer : public dom_distiller::ViewRequestDelegate {
  25  public:
  26   typedef base::Callback<void(const GURL&, const std::string&)>
  27       DistillationFinishedCallback;
  28
  29   DistillerViewer(ios::ChromeBrowserState* browser_state,
  30                   const GURL& url,
  31                   const DistillationFinishedCallback& callback);
  32   ~DistillerViewer() override;
  33
  34   // ViewRequestDelegate.
  35   void OnArticleUpdated(
  36       dom_distiller::ArticleDistillationUpdate article_update) override {}
  37   void OnArticleReady(const DistilledArticleProto* article_proto) override;
  38
  39  private:
  40   // The url of the distilled page.
  41   const GURL url_;
  42   // Callback to invoke when the page is finished.
  43   DistillationFinishedCallback callback_;
  44   // Interface for accessing preferences for distilled pages.
  45   scoped_ptr<DistilledPagePrefs> distilled_page_prefs_;
  46   // Keeps the distiller going until the view is released.
  47   scoped_ptr<dom_distiller::ViewerHandle> viewer_handle_;
  48
  49   DISALLOW_COPY_AND_ASSIGN(DistillerViewer);
  50 };
  51
  52 }  // namespace dom_distiller
  53
  54 #endif  // IOS_CHROME_BROWSER_DOM_DISTILLER_DISTILLER_VIEWER_H_